Dev Builds » 20210331-0547

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 15. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

Host Duration Avg Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo
ncm-dbt-01 06:42:42 583339 3998 301 1828 1869 -139.78 ± 5.07 101 1367 489 42 0 -310.6 ± 15.42
ncm-dbt-02 06:42:03 585902 4000 348 1812 1840 -133.34 ± 4.98 90 1319 556 35 0 -292.63 ± 14.44
ncm-dbt-03 06:41:25 584852 4000 343 1806 1851 -133.24 ± 4.98 79 1349 529 42 1 -296.27 ± 14.82
ncm-dbt-04 06:42:33 565821 4008 321 1815 1872 -136.06 ± 5.0 93 1345 530 35 1 -301.06 ± 14.8
ncm-dbt-05 06:44:28 581575 3994 353 1815 1826 -133.36 ± 4.96 87 1322 554 34 0 -293.64 ± 14.46
20000 1666 9076 9258 -135.15 ± 2.24 450 6702 2658 188 2 -298.76 ± 6.6

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
452657 ncm-dbt-04 561990 8 1 4 3 -136.8 ± 89.09 0 3 1 0 0 -337.69 ± 541.44
452656 ncm-dbt-05 582903 494 41 233 220 -142.52 ± 14.42 14 168 61 4 0 -315.82 ± 44.18
452655 ncm-dbt-01 584579 498 42 231 225 -138.8 ± 13.14 10 170 68 1 0 -314.54 ± 41.43
452654 ncm-dbt-03 584748 500 48 223 229 -126.97 ± 13.76 8 164 73 5 0 -280.42 ± 40.21
452653 ncm-dbt-04 560479 500 36 225 239 -138.18 ± 13.12 9 173 66 2 0 -315.35 ± 42.24
452652 ncm-dbt-02 586731 500 41 228 231 -136.56 ± 14.1 13 164 70 3 0 -298.62 ± 41.01
452651 ncm-dbt-01 581610 500 34 226 240 -140.62 ± 14.17 12 173 60 5 0 -315.35 ± 44.57
452650 ncm-dbt-05 584748 500 33 209 258 -127.76 ± 13.39 8 163 76 3 0 -282.94 ± 39.21
452649 ncm-dbt-03 585801 500 53 220 227 -120.67 ± 14.99 11 154 76 9 0 -254.16 ± 39.42
452648 ncm-dbt-02 585379 500 34 229 237 -143.07 ± 13.91 13 172 62 3 0 -321.19 ± 43.77
452647 ncm-dbt-04 566888 500 27 231 242 -150.51 ± 14.4 14 182 48 6 0 -346.12 ± 49.86
452646 ncm-dbt-01 584790 500 39 234 227 -143.07 ± 15.99 20 163 59 8 0 -301.33 ± 44.81
452645 ncm-dbt-05 580572 500 51 226 223 -126.97 ± 14.45 11 159 74 6 0 -273.0 ± 39.95
452644 ncm-dbt-03 580738 500 48 237 215 -138.18 ± 13.32 9 174 64 3 0 -315.35 ± 43.03
452643 ncm-dbt-04 566809 500 42 236 222 -142.25 ± 14.48 18 159 72 1 0 -304.07 ± 40.16
452642 ncm-dbt-02 585211 500 50 223 227 -125.38 ± 13.96 7 166 70 7 0 -277.93 ± 41.14
452641 ncm-dbt-01 584579 500 40 223 237 -133.34 ± 13.81 7 176 60 7 0 -304.07 ± 44.5
452640 ncm-dbt-05 578218 500 37 230 233 -141.44 ± 13.01 9 177 62 2 0 -327.18 ± 43.69
452639 ncm-dbt-03 581070 500 36 225 239 -138.18 ± 13.32 10 171 67 2 0 -312.48 ± 41.9
452638 ncm-dbt-04 566217 500 48 223 229 -126.97 ± 15.42 15 153 74 8 0 -263.42 ± 39.97
452637 ncm-dbt-02 586097 500 56 234 210 -129.35 ± 13.36 7 168 71 4 0 -290.66 ± 40.76
452636 ncm-dbt-01 583363 500 32 229 239 -144.71 ± 14.59 13 178 52 7 0 -327.18 ± 47.79
452635 ncm-dbt-05 582569 500 43 230 227 -136.56 ± 14.96 14 166 63 7 0 -295.94 ± 43.42
452634 ncm-dbt-04 567640 500 48 221 231 -125.38 ± 13.43 7 163 76 4 0 -277.93 ± 39.29
452633 ncm-dbt-02 587664 500 41 226 233 -134.95 ± 14.82 14 163 67 6 0 -290.66 ± 42.08
452632 ncm-dbt-03 585801 500 37 227 236 -138.99 ± 13.29 7 181 57 5 0 -324.17 ± 45.77
452631 ncm-dbt-01 583405 500 35 224 241 -138.18 ± 14.41 12 171 61 6 0 -306.84 ± 44.17
452630 ncm-dbt-04 566533 500 40 223 237 -133.34 ± 14.68 12 166 65 7 0 -290.66 ± 42.73
452629 ncm-dbt-05 583782 500 45 228 227 -133.34 ± 13.63 11 163 74 2 0 -293.29 ± 39.69
452628 ncm-dbt-03 586774 500 43 217 240 -126.18 ± 14.46 7 169 66 7 1 -282.94 ± 42.37
452627 ncm-dbt-02 585759 500 41 218 241 -128.55 ± 13.73 9 163 74 4 0 -282.94 ± 39.86
452626 ncm-dbt-01 582360 500 39 223 238 -134.15 ± 14.5 14 160 72 4 0 -288.06 ± 40.46
452625 ncm-dbt-04 566967 500 42 228 230 -135.76 ± 13.57 11 166 71 2 0 -301.33 ± 40.6
452624 ncm-dbt-02 585126 500 48 227 225 -130.14 ± 13.88 11 160 76 3 0 -282.94 ± 39.21
452623 ncm-dbt-03 586816 500 43 220 237 -128.55 ± 13.73 6 172 65 7 0 -290.66 ± 42.73
452622 ncm-dbt-05 583237 500 50 228 222 -129.35 ± 13.72 7 170 67 6 0 -290.66 ± 42.08
452621 ncm-dbt-01 582027 500 40 238 222 -145.54 ± 14.02 13 176 57 4 0 -330.23 ± 45.79
452620 ncm-dbt-04 568872 500 37 224 239 -136.56 ± 13.92 7 180 57 5 1 -318.25 ± 45.73
452619 ncm-dbt-03 587070 500 35 237 228 -148.85 ± 15.35 21 164 61 4 0 -318.25 ± 44.18
452618 ncm-dbt-02 585253 500 37 227 236 -138.99 ± 14.91 16 163 66 5 0 -298.62 ± 42.41
452617 ncm-dbt-05 576578 500 53 231 216 -129.35 ± 14.41 13 156 77 4 0 -275.45 ± 39.01

Commit

Commit ID c489df6f5b5629a135af3b8222fa1ef607ec1526
Author bmc4
Date 2021-03-31 05:47:15 UTC
Simplify King Evasion Simplify away the removal of some illegal `KING`-evasion moves during move generation. Verified for correctness by running perft on the following positions: ``` ./stockfish bench 16 1 6 default perft Nodes searched: 71608931810 ./stockfish position fen 4rrk1/1p1nq3/p7/2p1P1pp/3P2bp/3Q1Bn1/PPPB4/1K2R1NR w - - 40 21 go perft 6 Nodes searched: 6136386434 ``` Passed STC: LLR: 2.94 (-2.94,2.94) {-1.00,0.20} Total: 16072 W: 1473 L: 1349 D: 13250 Ptnml(0-2): 57, 1047, 5710, 1159, 63 https://tests.stockfishchess.org/tests/view/60629e7ef183b42957b423b1 Passed LTC: LLR: 2.94 (-2.94,2.94) {-0.70,0.20} Total: 59064 W: 2214 L: 2177 D: 54673 Ptnml(0-2): 26, 1944, 25556, 1979, 27 https://tests.stockfishchess.org/tests/view/6062dce4f183b42957b423de closes https://github.com/official-stockfish/Stockfish/pull/3415 No functional change
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